Datenbank in Feuerbasis, wie spcific Informationen zu nehmen und zu spcific Marker google map

Question

auf die auf erstelle ich dies tun:

protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 

     FirebaseDatabase database = FirebaseDatabase.getInstance(); 
     mDatabase = FirebaseDatabase.getInstance().getReference(); 

ich verwende in google map Marker und wenn der Benutzer einen anderen Ort speichern möchte ich Erfolg haben um den Marker genau den LATLNG des User Picks zu setzen. aber ich habe mehr Informationen, die der Benutzer wie Ortsname, Bewertung, etc ... und ich trage nicht, um die Informationen auf den gleichen Marker setzen, die die Verwendung hinzufügen. hier i hinzufügen Markierung von Firebase Datenbank:

mDatabase.child("Bath").addChildEventListener(new ChildEventListener() { 
     @Override 
     public void onChildAdded(DataSnapshot dataSnapshot, String s) { 

     for (DataSnapshot data : dataSnapshot.getChildren()); 
      Bathroom bathroom=dataSnapshot.getValue(Bathroom.class); 

      double locationSaveLat = bathroom.getLocationBathBLat(); 
      double locationSaveLon = bathroom.getLocationBathALon(); 


      mMap.addMarker(new MarkerOptions().position(new LatLng(locationSaveLon,locationSaveLat)).draggable(false).icon(BitmapDescriptorFactory 
        .fromResource(R.drawable.bath_small)).title(titleReadFragment)); 
      Log.d("data", bathroom.getRatebath()); 
     } 

     @Override 
     public void onChildChanged(DataSnapshot dataSnapshot, String s) { 
      Log.d("data change",dataSnapshot.toString()); 

     } 

     @Override 
     public void onChildRemoved(DataSnapshot dataSnapshot) { 
      Log.d("data remove",dataSnapshot.toString()); 

     } 

     @Override 
     public void onChildMoved(DataSnapshot dataSnapshot, String s) { 

     } 

     @Override 
     public void onCancelled(DatabaseError databaseError) { 

     } 


    }); 

dies mein Fragment Klasse SaveBathroonFragment wird hier i speichern Details Marker und Push-to-Feuerbasis.

hier kann ich nicht erfolgreich sein, die Informationen zu bestimmten Marker hinzufügen, geben Sie die erste Information für alle Marker und nicht geben Sie mir die spezifischen Informationen für bestimmte Marker. ich denke Notwendigkeit für Schleife aber ich weiß nicht, wie genau das tut.

public class SaveBathroonFragment extends DialogFragment { 

    private static final String fireBase_URL="https://bathroomfinder.firebaseio.com/path/to/data"; 
    private DatabaseReference databaseReference; 
    FirebaseStorage storage; 
    StorageReference mountainsRef; 
    private Activity context; 
    private static int RESULT_LOAD_IMAGE = 2; 
    private ArrayList<Bitmap> bitmapList=new ArrayList<Bitmap>(); 
    View view; 
    private static Uri selectedImage; 
    UploadTask uploadTask; 
    InputStream inputStream; 
    Bitmap bitmap; 
    Handler handler; 
    EditText locationLatitudeEditText; 
    EditText locationLongitudeEditText; 



    @Override 
    public Dialog onCreateDialog(Bundle savedInstanceState) { 
     databaseReference = FirebaseDatabase.getInstance().getReference(); 
     storage = FirebaseStorage.getInstance(); 


     AlertDialog.Builder builder = new AlertDialog.Builder(getActivity()); 
     double locationLON = getArguments().getDouble(MapsActivity.LON); 
     double locationLAT = getArguments().getDouble(MapsActivity.LAT); 


     builder.setMessage("Add new bathroom"); 
     view = context.getLayoutInflater().inflate(R.layout.save_bathroom_fragment, null, false); 
     Button pickPhoto = (Button) view.findViewById(R.id.bpickphoto); 
     pickPhoto.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       TakePickphoto(); 
      } 
     }); 
     AdapterImageView adapterImageView = new AdapterImageView(getActivity(), bitmapList); 

     final EditText bathroomName = (EditText) view.findViewById(R.id.name_bath); 

     builder.setView(view); 

     locationLatitudeEditText = (EditText) view.findViewById(R.id.latitude_map); 
     locationLongitudeEditText = (EditText) view.findViewById(R.id.longitude_map); 
     locationLatitudeEditText.setText(locationLAT+""); 
     locationLongitudeEditText.setText(locationLON+""); 

     locationLongitudeEditText.setEnabled(false); 
     locationLatitudeEditText.setEnabled(false); 

     EditText rateBatroomEditText = (EditText) view.findViewById(R.id.rate_batroom); 
     rateBatroomEditText.setEnabled(false); 

     bathroomName.setOnEditorActionListener(new TextView.OnEditorActionListener() { 
      @Override 
      public boolean onEditorAction(TextView v, int actionId, KeyEvent event) { 
       if (actionId== EditorInfo.IME_ACTION_SEND){ 
        sendMessage(); 
       } 
       return true; 
      } 
     }); 

     builder.setPositiveButton("Back", new DialogInterface.OnClickListener() { 
      @Override 
      public void onClick(DialogInterface dialog, int which) { 

      } 
     }); 
     builder.setNegativeButton("Save", new DialogInterface.OnClickListener() { 
      @Override 
      public void onClick(DialogInterface dialog, int which) { 
       sendMessage(); 

      } 
     }); 

     return builder.create(); 
    } 
    private void sendMessage() { 
     EditText nameBathroomSave = (EditText) view.findViewById(R.id.name_bath); 
     RatingBar rateBatroomSave = (RatingBar) view.findViewById(R.id.ratingBar); 

     double locationBathBLat = Double.parseDouble(locationLatitudeEditText.getText().toString()); 
     double locationBathALon = Double.parseDouble(locationLongitudeEditText.getText().toString()); 
     String messageBath = nameBathroomSave.getText().toString(); 
     String rathbath = rateBatroomSave.getRating() + ""; 
     if (!messageBath.isEmpty()) { 
      Random rand = new Random(); 

      String autor = "test" + rand.nextInt(1000); 
      Bathroom bathroom = new Bathroom(autor, messageBath, rathbath, locationBathALon,locationBathBLat); 
      if (databaseReference.child("Bath") != null) { 
       if (databaseReference.child("Bath").child(autor) != null) { 
        databaseReference.child("Bath").child(autor).setValue(bathroom); 
        databaseReference.push().getDatabase(); 
       } else { 
        Toast.makeText(getActivity(), "missing some ", Toast.LENGTH_SHORT).show(); 
       } 

hier ist meine Klasse ReadBathroomFragment, was ich in Fragment Klasse speichern und diese Klasse ist auch Fragment

public class ReadBathroomFragment extends DialogFragment { 
    private Activity context; 
    GoogleMap mMap; 
    private static LatLng locationDirectionClickOnMap; 


    @Override 
    public Dialog onCreateDialog(Bundle savedInstanceState) { 


     AlertDialog.Builder builder = new AlertDialog.Builder(getActivity()); 
     final DatabaseReference mDatabase = FirebaseDatabase.getInstance().getReference(); 

     double locationLON = getArguments().getDouble(MapsActivity.LON); 
     double locationLAT = getArguments().getDouble(MapsActivity.LAT); 
     locationDirectionClickOnMap = new LatLng(locationLON,locationLAT); 


//  builder.setTitle("Title"); 
     builder.setTitle("Bathroom details"); 
     //builder.setMessage("Bathroom details"); 
     View view = context.getLayoutInflater().inflate(R.layout.read_bathroom_fragment, null, false); 
     builder.setView(view); 
     final EditText placeName= (EditText) view.findViewById(R.id.name_read_bath); 
     placeName.setEnabled(false); 
     final EditText rateBatroomEditText = (EditText) view.findViewById(R.id.read_rate_batroom); 
     rateBatroomEditText.setEnabled(false); 
     final RatingBar readRating= (RatingBar) view.findViewById(R.id.read_ratingBath); 
     readRating.setEnabled(true); 
     EditText locationReadText = (EditText) view.findViewById(R.id.latlng_map_read); 

     locationReadText.setText(locationLON + "," + locationLAT); 
     //locationReadText.setText(Locationq); 
     locationReadText.setEnabled(false); 

     mDatabase.child("Bath").addChildEventListener(new ChildEventListener() { 
      @Override 
      public void onChildAdded(DataSnapshot dataSnapshot, String s) { 
//    for (DataSnapshot data : dataSnapshot.getChildren()); 

       Bathroom bathroom = dataSnapshot.getValue(Bathroom.class); 
       Log.d("children count", String.valueOf(dataSnapshot.getChildrenCount())); 
       readRating.setRating(Float.parseFloat(bathroom.getRatebath())); 
       placeName.setText(bathroom.getMessageNameBath()); 


      } 

      @Override 
      public void onChildChanged(DataSnapshot dataSnapshot, String s) { 
       for (DataSnapshot data : dataSnapshot.getChildren()); 

       Bathroom bathroom=dataSnapshot.getValue(Bathroom.class); 
       Log.d("children count", String.valueOf(dataSnapshot.getChildrenCount())); 
       readRating.setRating(Float.parseFloat(bathroom.getRatebath())); 
       placeName.setText(bathroom.getMessageNameBath()); 


      } 

      @Override 
      public void onChildRemoved(DataSnapshot dataSnapshot) { 

      } 

      @Override 
      public void onChildMoved(DataSnapshot dataSnapshot, String s) { 

      } 

      @Override 
      public void onCancelled(DatabaseError databaseError) { 

      } 
     }); 




     builder.setPositiveButton("Back", new DialogInterface.OnClickListener() { 
      @Override 
      public void onClick(DialogInterface dialog, int which) { 

      } 
     }); 
     builder.setNegativeButton("Thank you", new DialogInterface.OnClickListener() { 
      @Override 
      public void onClick(DialogInterface dialog, int which) { 

      } 
     }); 


     return builder.create(); 
    } 

    @Override 
    public void onAttach(Activity activity) { 
     super.onAttach(activity); 
     this.context = activity; 

    } 
} 

hier mein Badezimmer Klasse

public class Bathroom { 
    private String autor; 
    private String messageNameBath; 
    private String ratebath; 

    private double locationBathBLat; 
    private double locationBathALon; 

    public Bathroom() { 
    } 

    public double getLocationBathBLat() { 
     return locationBathBLat; 
    } 

    public double getLocationBathALon() { 
     return locationBathALon; 
    } 

    public String getRatebath() { 
     return ratebath; 
    } 

    public Bathroom(String autor, String messageNameBath, String ratebath 
      ,double locationBathBLat,double locationBathALon) { 
     this.autor = autor; 
     this.messageNameBath = messageNameBath; 
     this.ratebath=ratebath; 
     this.locationBathBLat=locationBathBLat; 
     this.locationBathALon=locationBathALon; 


    } 

    public String getAutor() { 
     return autor; 
    } 

    public String getMessageNameBath() { 
     return messageNameBath; 
    } 
} 

Answer 1

Sie brauchen nicht zu erzeugen ist id (autor) selbst, können Sie einfach push() verwenden, um ein neues Kind mit einer eindeutigen ID zu generieren. Firebase - Save Data on Android

Bathroom bathroom = new Bathroom(autor, messageBath, rathbath, locationBathALon,locationBathBLat); 
databaseReference.child("Bath").push().setValue(bathroom); 

Sie sollten OnMarkerClickListener implementieren in Ihrem ReadBathroomFragment

public class ReadBathroomFragment extends DialogFragment implements OnMarkerClickListener { 

und dann die onMarkerClick Methode implementieren für Marker Click-Ereignis

@Override 
public boolean onMarkerClick(final Marker marker) {} 

Sie müssen hören Ihre Bathroom Klasse speichern und die Marker in eine Datenstruktur wie HashMap, nachdem Sie Daten aus der Firebase-Datenbank gelesen haben. Sie müssen also nicht mehr von Firebase lesen.

mDatabase.child("Bath").addChildEventListener(new ChildEventListener() { 
    @Override 
    public void onChildAdded(DataSnapshot dataSnapshot, String s) { 
     Bathroom bathroom = dataSnapshot.getValue(Bathroom.class); 

     double lat = bathroom.getLocationBathBLat(); 
     double lon = bathroom.getLocationBathALon(); 

     String messageName = bathroom.getMessageNameBath(); 
     String rate = bathroom.getRatebath(); 

     Marker marker = mMap.addMarker(new MarkerOptions() 
      .position(new LatLng(lat,lon)) 
      .draggable(false) 
      .icon(BitmapDescriptorFactory.fromResource(R.drawable.bath_small)) 
      .title(titleReadFragment) 
      .snippet(messageName + " Rate: " + rate)); 
     markersMap.put(marker, bathroom); 
    } 

    @Override 
    public void onChildChanged(DataSnapshot dataSnapshot, String s) {} 

    @Override 
    public void onChildRemoved(DataSnapshot dataSnapshot) {} 

    @Override 
    public void onChildMoved(DataSnapshot dataSnapshot, String s) {} 

    @Override 
    public void onCancelled(DatabaseError databaseError) {} 
}); 

Vergessen Sie nicht die HashMap Variable als ReadBathroomFragment Klassenvariable

private Map<Marker, Bathroom> markersMap = new HashMap<>(); 

und dann können Sie zeigen Ihre Alertdialog innerhalb der onMarkerClick Methode zu erklären, Ihre setView nach allen Ansichten tun sollten unter Die Ansicht ist fertig.

Bathroom bathroom = markersMap.get(marker); 

AlertDialog.Builder builder = new AlertDialog.Builder(getActivity()); 
builder.setTitle("Bathroom details"); 

View view = context.getLayoutInflater().inflate(R.layout.read_bathroom_fragment, null, false); 

EditText placeName = (EditText) view.findViewById(R.id.name_read_bath); 
placeName.setEnabled(false); 
placeName.setText(bathroom.getMessageNameBath()); 

EditText rateBatroomEditText = (EditText) view.findViewById(R.id.read_rate_batroom); 
rateBatroomEditText.setEnabled(false); 
rateBatroomEditText.setText(SOME_STRING); 

RatingBar readRating = (RatingBar) view.findViewById(R.id.read_ratingBath); 
readRating.setEnabled(true); 
readRating.setRating(Float.parseFloat(bathroom.getRatebath())); 

EditText locationReadText = (EditText) view.findViewById(R.id.latlng_map_read) 
locationReadText.setText(SOME_STRING); 

builder.setView(view); 
builder.create().show(); 

Ich hoffe, dass ich Ihre Frage beantwortet, cheers :)